The term "Greek Catholic" refers to members of the Eastern Catholic Church that follows the Byzantine Rite while remaining in communion with the Pope and the Roman Catholic Church. This group primarily exists in regions such as Greece, Ukraine, and Eastern Europe, where they maintain their unique traditions and liturgical practices. Greek Catholics celebrate the Divine Liturgy, which is similar to the Orthodox Christian services but includes elements of Catholic doctrine. They often use the Greek language in their liturgies and emphasize the importance of both the Holy Scriptures and the teachings of the Church Fathers in their faith practice.